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IMPROVED GAR-SPRING.

p S IE EOIFIO A'I'ION.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, DAVID MYERS, of Chicago, in the county of Cook, and State of Illinois, have invented a new and useful improvement in Railroad Car-Springs; and I do hereby declare that the following is a full l.

clear, and exact description of the same, reference being had to the accompanying drawings, and the letters and figures marked thereon, which form part of this specification.

The nature of my said invention consists in suspending the bolster upon which the body of the car rests upon the truck frame, by means of jointed hangers, and the employment in connection therewith of a spring or springs, as hereinafter set forth, by means-of which novel arrangement or application, springs whose elastic I or reacting force is much less than that of the springs ordinarily used for the purposemay be used withequally j satisfactory results.

To enable those skilled in the art to understand how to construct and use my invention, I will proceed to describe the same with particularity, reference being made, in so doing, to the' aforesaid drawings, in which Figure 1 represents a plan or top view of myinvention.

Figure2, a transverse vertical section of the same at x,fig. l; and

FigureB, a detached vertical section. at 3 in fig. 2.

Similar letters of reference in the difi'erent figures denote the same parts of my invention.

A represents the truck frame, constructed in the usual manner, supported upon the wheels 0 represents the'bolstcr, upon which the body of the car rests, lying between the cross-timbers of the truck frame, as shown, and suspended therefrom or thereupon by means of the rods at and the jointed hangers, F G the rods a passing through the upper ends of said'hangers and lying upon the cross-timbers of the truck frame, and the r j rods 15 passing through the lower ends of said hangers and supporting the bar E, which forms a part of the bolster,

being connected with C by the uprights or blocks D at each end. H representsa cross-bar passing through the hangers F G at the joint," to which cross-bars H H are attached each end of the spring S, which draws the hangers in from a vertical position to an angle substantially as shown in-fig. 2. .By this arrangement the weight of the car upon the bolster C'has a tendency to straighten the hangdrs and draw the cross-bars H H from each other";

,and thus the. weight of the car is brought ppon the horizontally-arranged spring S. But, as the'hangers gradually assume a vertical position, the horizontal extension of the spring gradually increases and the weight of the car is thrown more and more upon the hangers F G, while at the same time, the spring beingtense, the car has all the freedom and ease of being supported upon springs. Thus, by throwing the weight of the car partially upon the hangers, thereby relieving the springs from that amount of pressure, it is obvious that the desired results may be secured by much less expensive springs than those'in ordinary use. The same results are attained whether the straightening of the hangers be caused by a uniform pressure, as by the weight of the car, or by the sudden jolting of the car when in motion. The same general effect would be produced by placing compressed springs between the connecting-bars H and the fixed blocks D; but in that case the free lateral motion of the bolster inthetruck frame would be to a great extent prevented. V By th eherein-described arrangement it is readily seen that when the car truck, by any unevenness in the track, is jolted or thrown upwards, which movement very frequently breaks ordinary car-springs, the spring herein described grows relatively stronger as it receives the blow, and is consequently less liable to break.

. Having. described the construction and oper ation of my invention, I will now specify what I claim and desire to secure by Letters Patent.

I claim the jointed hangers F G when operated by springs, substantially asand for the purposes herein specified and shown. 3 1 V v DAVID. MYERS.

Witnesses:

W. E. MARKS, R. W. GooN. 

